to download LG Multi V Plus - Hawco

Function
4.6 Pump Down
This function gathers the refrigerant present in the system to ODU
Use this function to store refrigerant of system in ODU for leakage or IDU replacement.
Main PCB
SW02B
Main PCB
SW01V
Close liquid SVC v/v of each unit.
Open gas SVC v/v of each unit.
Power Reset
after Master Unit Dip switch No.10 ON
Note 2)
Low pressure < 229kpa
Main PCB
SW02B
Press the black button
All IDU cooling operation
Satisfy low
pressure target?
Yes
IDU, ODU OFF
Power reset after Dop switch No.10 off
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Pump down completed
Press the black button
- 40 -
Note 1)
ODU SVC V/V Setting
Close Open
Ball Valve(Liquid Pipe)
Elbow
Ball Valve(Gas Pipe)
ODU SVC V/V Setting
Close Close
Ball Valve(Liquid Pipe)
[Note]
If is displayed, close gas SVC V/V of all ODU immediately.
If low pressure descends below 229 kPa, the system turns off automatically. Close the gas SVC V/V immediately.
Caution
1.Use pump down function within guaranteed temperature range
IDU : 20~32°C
ODU : 5~40°C
2. Make certain that IDU doesn't run with thermo off mode during operation
3. Maximum operation time of pump down function is 30 min.
(in case low pressure doesn't go down)
4. Press black+red button during operation to end pump down.(IDU,ODU off)
No
Elbow
Ball Valve(Gas Pipe)
LGE Internal Use Only